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Finding the Fourth Proportional to 84,827.75, 127,220.60 and 28,666.60

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Solution

The fourth proportional to 84,827.75, 127,220.60 and 28,666.60 is: 42,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,827.75 : 127,220.60 = 28,666.60 : x
  2. Step 2: Convert to fraction form
    84,827.75/127,220.60 = 28,666.60/x
  3. Step 3: Cross multiply
    84,827.75x = 127,220.60 × 28,666.60
  4. Step 4: Simplify right side
    84,827.75x = 3,646,981,805.57
  5. Step 5: Solve for x
    x = 3,646,981,805.57/84,827.75
  6. Step 6: Final answer
    x = 42,992.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.